A practical approach to condition and risk based power transformer asset replacement

Author

Duarte, E. ; Falla, D. ; Gavin, J. ; Lawrence, M. ; McGrail, T. ; Miller, D. ; Prout, P. ; Rogan, B.

Author_Institution

Electr. Distrib. & Generation, Nat. Grid, Waltham, MA, USA

fYear

2010

Firstpage

1

Lastpage

4

Abstract

As with other utilities, National Grid is faced with a fleet of transformers, many heavily loaded, where the present age of many units is in excess of the expected design life. National Grid is pursuing a practical and iterative approach to replacement based on risk: a combination of condition and criticality. The process is iterative and makes best use of condition data and subject matter expert opinion, combined with consequence of unplanned unavailability. The result is a list of transformers targeted for strategic replacement and an `action plan´ for all units based on tactical response which may include system reconfiguration.

Keywords

iterative methods; power transformers; risk analysis; condition-based power transformer asset replacement; iterative approach; national grid; risk-based power transformer asset replacement; strategic replacement; subject matter expert opinion; system reconfiguration; Investments; Iterative methods; Mesh generation; Power generation; Power transformer insulation; Power transformers; Reliability; Safety; Substations; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation (ISEI), Conference Record of the 2010 IEEE International Symposium on

Conference_Location

San Diego, CA

ISSN

1089-084X

Print_ISBN

978-1-4244-6298-8

Type

conf

DOI

10.1109/ELINSL.2010.5549580

Filename

5549580